"It makes it feel more like they're at home," a worker said. "We work hard, but we have fun."

Perhaps that's why Fortune ranked Google number one on its list of great places to work.

Today, Google has offices all over the world, including one in Krakow. Managers credit the Fortune ranking to hiring great people, offering good opportunities and developing a corporate culture where people want to work. But with all the perks, you might wonder how does work get done?

"We hire the best and the brightest, and they're self-motivated," one manager said. "And we're all focused on goals and results and so they know what we need to get done, and we leave it up to them to balance that time."

A work environment like that gets a lot of attention. In fact, Google says that each year it gets about 2 million applications. Last year, they hired just 7,000 people around the world.